Land Speed Record Holder and 3 Time America's Most Beautiful Roadster winner, Ermie Immerso, started in the exhaust business in the early 1960's and quickly became an industry leader in the header and exhaust business with the Thunderbird Brand and by building private label product for many iconic industry companies. In 2000, PerTronix entered the Exhaust business by acquiring the company when Ermie decided to retire. PerTronix knowledge of the Performance Industry, combined with Employees with extensive backgrounds in the exhaust business made this seemingly unlikely pairing a well-matched addition. Rebranded as Patriot Exhaust Products, we expanded the product line while strengthening the existing products including Headers, Side Pipes, Exhaust Tips, and the Smithy's Mufflers- the Original Hot Rod Muffler! Patriot continues to be a favorite for owners and top builders of Street Rods, Customs, Pick Up Trucks, and Muscle Cars.
| Download Name | File Size |
| H8301-1.pdf | 475.66KB |
| H8301-B.pdf | 475.66KB |
| Make | Model | Years | Engine | Fitment Notes |
| Pontiac | Firebird | 1970 | 5.7L / 350 / V8 6.6L / 400 / V8 |
Some factory heads do not have end bolt holes and should be drilled and tapped to assure proper sealing. Legal for use on 70-79 Firebird Emission Vehicles in 50 States Legal for use on 70-74 Firebird Emission Vehicles in 50 States |
| Pontiac | Firebird | 1971 | 5.7L / 350 / V8 7.5L / 455 / V8 6.6L / 400 / V8 |
Some factory heads do not have end bolt holes and should be drilled and tapped to assure proper sealing. Legal for use on 70-79 Firebird Emission Vehicles in 50 States Legal for use on 71-74 Firebird Emission Vehicles in 50 States Legal for use on 70-74 Firebird Emission Vehicles in 50 States |
| Pontiac | Firebird | 1972 | 5.7L / 350 / V8 7.5L / 455 / V8 6.6L / 400 / V8 |
Some factory heads do not have end bolt holes and should be drilled and tapped to assure proper sealing. Legal for use on 70-79 Firebird Emission Vehicles in 50 States Legal for use on 71-74 Firebird Emission Vehicles in 50 States Legal for use on 70-74 Firebird Emission Vehicles in 50 States |
| Pontiac | Firebird | 1973 | 5.7L / 350 / V8 7.5L / 455 / V8 6.6L / 400 / V8 |
Some factory heads do not have end bolt holes and should be drilled and tapped to assure proper sealing. Legal for use on 70-79 Firebird Emission Vehicles in 50 States Legal for use on 71-74 Firebird Emission Vehicles in 50 States Legal for use on 70-74 Firebird Emission Vehicles in 50 States |
| Pontiac | Firebird | 1974 | 5.7L / 350 / V8 7.5L / 455 / V8 6.6L / 400 / V8 |
Some factory heads do not have end bolt holes and should be drilled and tapped to assure proper sealing. Legal for use on 70-79 Firebird Emission Vehicles in 50 States Legal for use on 71-74 Firebird Emission Vehicles in 50 States Legal for use on 70-74 Firebird Emission Vehicles in 50 States |
| Pontiac | Firebird | 1975 | 5.7L / 350 / V8 7.5L / 455 / V8 |
Some factory heads do not have end bolt holes and should be drilled and tapped to assure proper sealing. Legal for use on 70-79 Firebird Emission Vehicles in 50 States Not Legal for use on 75-76 Firebird Emission Vehicles in 50 States |
| Pontiac | Firebird | 1976 | 5.7L / 350 / V8 7.5L / 455 / V8 |
Some factory heads do not have end bolt holes and should be drilled and tapped to assure proper sealing. Legal for use on 70-79 Firebird Emission Vehicles in 50 States Not Legal for use on 75-76 Firebird Emission Vehicles in 50 States |
| Pontiac | Firebird | 1977 | 5.7L / 350 / V8 6.6L / 403 / V8 |
Some factory heads do not have end bolt holes and should be drilled and tapped to assure proper sealing. Legal for use on 70-79 Firebird Emission Vehicles in 50 States Not Legal for use on 77-79 Firebird Emission Vehicles in 50 States |
| Pontiac | Firebird | 1978 | 5.7L / 350 / V8 6.6L / 403 / V8 |
Some factory heads do not have end bolt holes and should be drilled and tapped to assure proper sealing. Legal for use on 70-79 Firebird Emission Vehicles in 50 States Not Legal for use on 77-79 Firebird Emission Vehicles in 50 States |
| Pontiac | Firebird | 1979 | 5.7L / 350 / V8 6.6L / 403 / V8 |
Some factory heads do not have end bolt holes and should be drilled and tapped to assure proper sealing. Legal for use on 70-79 Firebird Emission Vehicles in 50 States Not Legal for use on 77-79 Firebird Emission Vehicles in 50 States |
| Pontiac | GTO | 1964 | 6.4L / 389 / V8 | Some factory heads do not have end bolt holes and should be drilled and tapped to assure proper sealing. Legal for use on 64-66 GTO Emission Vehicles in 50 States |
| Pontiac | GTO | 1965 | 6.4L / 389 / V8 | Some factory heads do not have end bolt holes and should be drilled and tapped to assure proper sealing. Legal for use on 64-66 GTO Emission Vehicles in 50 States |
| Pontiac | GTO | 1966 | 6.4L / 389 / V8 | Some factory heads do not have end bolt holes and should be drilled and tapped to assure proper sealing. Legal for use on 64-66 GTO Emission Vehicles in 50 States |
| Pontiac | GTO | 1967 | 6.6L / 400 / V8 | Some factory heads do not have end bolt holes and should be drilled and tapped to assure proper sealing. Legal for use on 1967 GTO Emission Vehicles in 50 States |
| Pontiac | GTO | 1970 | 7.5L / 455 / V8 | Some factory heads do not have end bolt holes and should be drilled and tapped to assure proper sealing. Legal for use on 70-73 GTO Emission Vehicles in 50 States |
| Pontiac | GTO | 1971 | 7.5L / 455 / V8 | Some factory heads do not have end bolt holes and should be drilled and tapped to assure proper sealing. Legal for use on 70-73 GTO Emission Vehicles in 50 States |
| Pontiac | GTO | 1972 | 7.5L / 455 / V8 | Some factory heads do not have end bolt holes and should be drilled and tapped to assure proper sealing. Legal for use on 70-73 GTO Emission Vehicles in 50 States |
| Pontiac | GTO | 1973 | 6.6L / 400 / V8 7.5L / 455 / V8 |
Some factory heads do not have end bolt holes and should be drilled and tapped to assure proper sealing. Legal for use on 1973 GTO Emission Vehicles in 50 States Legal for use on 70-73 GTO Emission Vehicles in 50 States |
| Pontiac | Grand Am | 1973 | 6.6L / 400 / V8 7.5L / 455 / V8 5.7L / 350 / V8 |
Some factory heads do not have end bolt holes and should be drilled and tapped to assure proper sealing. Legal for use on 73-74 Grand Am Emission Vehicles in 50 States |
| Pontiac | Grand Am | 1974 | 6.6L / 400 / V8 7.5L / 455 / V8 5.7L / 350 / V8 |
Some factory heads do not have end bolt holes and should be drilled and tapped to assure proper sealing. Legal for use on 73-74 Grand Am Emission Vehicles in 50 States |
| Pontiac | Grand Am | 1975 | 7.5L / 455 / V8 5.7L / 350 / V8 6.6L / 400 / V8 |
Some factory heads do not have end bolt holes and should be drilled and tapped to assure proper sealing. Not Legal for use on 1975 Grand Am Emission Vehicles in 50 States |
| Pontiac | LeMans | 1964 | 5.3L / 326 / V8 | Some factory heads do not have end bolt holes and should be drilled and tapped to assure proper sealing. Legal for use on 64-67 LeMans Emission Vehicles in 50 States |
| Pontiac | LeMans | 1965 | 5.3L / 326 / V8 | Some factory heads do not have end bolt holes and should be drilled and tapped to assure proper sealing. Legal for use on 64-67 LeMans Emission Vehicles in 50 States |
| Pontiac | LeMans | 1966 | 5.3L / 326 / V8 | Some factory heads do not have end bolt holes and should be drilled and tapped to assure proper sealing. Legal for use on 64-67 LeMans Emission Vehicles in 50 States |
| Pontiac | LeMans | 1967 | 5.3L / 326 / V8 | Some factory heads do not have end bolt holes and should be drilled and tapped to assure proper sealing. Legal for use on 64-67 LeMans Emission Vehicles in 50 States |
| Pontiac | LeMans | 1968 | 6.6L / 400 / V8 5.7L / 350 / V8 |
Some factory heads do not have end bolt holes and should be drilled and tapped to assure proper sealing. Legal for use on 68-74 LeMans Emission Vehicles in 50 States Not Legal for use on 68-75 LeMans Emission Vehicles in 50 States |
| Pontiac | LeMans | 1969 | 6.6L / 400 / V8 5.7L / 350 / V8 |
Some factory heads do not have end bolt holes and should be drilled and tapped to assure proper sealing. Legal for use on 68-74 LeMans Emission Vehicles in 50 States Not Legal for use on 68-75 LeMans Emission Vehicles in 50 States |
| Pontiac | LeMans | 1970 | 6.6L / 400 / V8 7.5L / 455 / V8 5.7L / 350 / V8 |
Some factory heads do not have end bolt holes and should be drilled and tapped to assure proper sealing. Legal for use on 68-74 LeMans Emission Vehicles in 50 States Legal for use on 70-74 LeMans Emission Vehicles in 50 States Not Legal for use on 68-75 LeMans Emission Vehicles in 50 States |
| Pontiac | LeMans | 1971 | 6.6L / 400 / V8 7.5L / 455 / V8 5.7L / 350 / V8 |
Some factory heads do not have end bolt holes and should be drilled and tapped to assure proper sealing. Legal for use on 68-74 LeMans Emission Vehicles in 50 States Legal for use on 70-74 LeMans Emission Vehicles in 50 States Not Legal for use on 68-75 LeMans Emission Vehicles in 50 States |
| Pontiac | LeMans | 1972 | 6.6L / 400 / V8 7.5L / 455 / V8 5.7L / 350 / V8 |
Some factory heads do not have end bolt holes and should be drilled and tapped to assure proper sealing. Legal for use on 68-74 LeMans Emission Vehicles in 50 States Legal for use on 70-74 LeMans Emission Vehicles in 50 States Not Legal for use on 68-75 LeMans Emission Vehicles in 50 States |
| Pontiac | LeMans | 1973 | 6.6L / 400 / V8 7.5L / 455 / V8 5.7L / 350 / V8 |
Some factory heads do not have end bolt holes and should be drilled and tapped to assure proper sealing. Legal for use on 68-74 LeMans Emission Vehicles in 50 States Legal for use on 70-74 LeMans Emission Vehicles in 50 States Not Legal for use on 68-75 LeMans Emission Vehicles in 50 States |
| Pontiac | LeMans | 1974 | 6.6L / 400 / V8 7.5L / 455 / V8 5.7L / 350 / V8 |
Some factory heads do not have end bolt holes and should be drilled and tapped to assure proper sealing. Legal for use on 68-74 LeMans Emission Vehicles in 50 States Legal for use on 70-74 LeMans Emission Vehicles in 50 States Not Legal for use on 68-75 LeMans Emission Vehicles in 50 States |
| Pontiac | LeMans | 1975 | 6.6L / 400 / V8 5.7L / 350 / V8 |
Some factory heads do not have end bolt holes and should be drilled and tapped to assure proper sealing. Not Legal for use on 1975 LeMans Emission Vehicles in 50 States Not Legal for use on 68-75 LeMans Emission Vehicles in 50 States |
| Collector Attachment | 3-Bolt Flange |
| Collector Port Diameter | 3 IN |
| Design | Long Tube |
| Gasket Or Seal Included | Yes |
| Grade Type | Performance |
| Mounting Hardware Included | Yes |
| Oxygen Sensor Port | No |
| Part Type | Exhaust Header |
| Port Shape | D-Port |
| Proposition 65 | www.P65Warnings.ca.gov |
| Tube Wall Thickness | 18 GU |
| Warranty Time | 12 Months |
